Public bug reported:
On 22.04, when running `fdroidserver update` to add android APK's from
the official fdroid site to a local Android APK repo it's serving, it
will fail if any APK are using Android API versions greater than 28.
The most modern API version is 35, quite a bit ahead of 28, so this
error covers most of the APK's available for fdroid.
The verbose error output suggests this due to an inability of both
fdroidserver and its dependency androguard to parse the different
metadata in newer API versions.
When I manually built the latest versions of fdroidserver and androguard
from their respective git repos, both softwares downgraded the errors to
warnings and were able to serve any fdroid APK from the server; just
updating one or the other did not fully resolve the errors.
I would like to request that the 22.04 APT packages for fdroidserver and
its dependency androguard be updated to their latest versions, 2.4.3 and
4.1.3 respectively.
The current APT versions are fdroidserver 2.1-1 and androguard
3.4.0~a1-14~jammy.
The network I intend to use them on does not have internet access and
only permits an APT repo mirror by policy, and passing around source
code or pip wheels for the newest versions is not terribly ergonomic.
A typical verbose error output of this type looks like this:
sudo fdroid update -v
2025-10-14 09:13:58,645 DEBUG: Reading 'config.yml'
2025-10-14 09:13:58,666 DEBUG: Using androguard from
"/usr/lib/python3/dist-packages/androguard/__init__.py"
2025-10-14 09:13:58,666 WARNING: repo_icon "repo/icons/icon.png" does not
exist! Check "config.yml".
2025-10-14 09:13:58,714 DEBUG: Reading F-Droid.apk from cache
2025-10-14 09:13:58,766 DEBUG: Reading de.danoeh.antennapod_3090095.apk from
cache
2025-10-14 09:13:58,769 DEBUG: Reading de.kaffeemitkoffein.imagepipe_52.apk
from cache
2025-10-14 09:13:58,769 DEBUG: Processing ir.shahriaarrr.tomodoro_2.apk
2025-10-14 09:13:58,942 INFO: Starting analysis on AndroidManifest.xml
2025-10-14 09:13:58,953 INFO: APK file was successfully validated!
2025-10-14 09:13:58,953 DEBUG: Available API levels: 4, 5, 6, 7, 8, 9, 10, 13,
14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28
2025-10-14 09:13:58,953 WARNING: Requested API level 35 is larger than maximum
we have, returning API level 28 instead.
2025-10-14 09:13:58,953 DEBUG: Available API levels: 4, 5, 6, 7, 8, 9, 10, 13,
14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28
2025-10-14 09:13:58,957 CRITICAL: Unknown exception found!
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/androguard/core/bytecodes/apk.py", line
1556, in get_android_resources
return self.arsc["resources.arsc"]
KeyError: 'resources.arsc'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/bin/fdroid", line 33, in <module>
sys.exit(load_entry_point('fdroidserver==2.1', 'console_scripts',
'fdroid')())
File "/usr/lib/python3/dist-packages/fdroidserver/__main__.py", line 230, in
main
raise e
File "/usr/lib/python3/dist-packages/fdroidserver/__main__.py", line 211, in
main
mod.main()
File "/usr/lib/python3/dist-packages/fdroidserver/update.py", line 2169, in
main
apks, cachechanged = process_apks(apkcache, repodirs[0], knownapks,
options.use_date_from_apk)
File "/usr/lib/python3/dist-packages/fdroidserver/update.py", line 1555, in
process_apks
(skip, apk, cachethis) = process_apk(apkcache, apkfilename, repodir,
knownapks,
File "/usr/lib/python3/dist-packages/fdroidserver/update.py", line 1422, in
process_apk
apk = scan_apk(apkfile)
File "/usr/lib/python3/dist-packages/fdroidserver/update.py", line 1173, in
scan_apk
scan_apk_androguard(apk, apk_file)
File "/usr/lib/python3/dist-packages/fdroidserver/update.py", line 1260, in
scan_apk_androguard
arsc = apkobject.get_android_resources()
File "/usr/lib/python3/dist-packages/androguard/core/bytecodes/apk.py", line
1562, in get_android_resources
self.arsc["resources.arsc"] = ARSCParser(self.zip.read("resources.arsc"))
File
"/usr/lib/python3/dist-packages/androguard/core/bytecodes/axml/__init__.py",
line 1321, in __init__
self.packages[package_name].append(ARSCResTypeSpec(self.buff, pc))
File
"/usr/lib/python3/dist-packages/androguard/core/bytecodes/axml/__init__.py",
line 2181, in __init__
raise ResParserError("res1 must be zero!")
androguard.core.bytecodes.axml.ResParserError: res1 must be zero!
Version info:
lsb_release -rd
Description: Ubuntu 22.04.5 LTS
Release: 22.04
apt-cache policy fdroidserver
fdroidserver:
Installed: 2.1-1
Candidate: 2.1-1
Version table:
*** 2.1-1 500
500 http://us.archive.ubuntu.com/ubuntu jammy/universe amd64
Packages
500 http://us.archive.ubuntu.com/ubuntu jammy/universe i386
Packages
100 /var/lib/dpkg/status
apt-cache policy androguard
androguard:
Installed: 3.4.0~a1-14~jammy
Candidate: 3.4.0~a1-14~jammy
Version table:
*** 3.4.0~a1-14~jammy 100
100 /var/lib/dpkg/status
3.4.0~a1-1 500
500 http://us.archive.ubuntu.com/ubuntu jammy/universe amd64
Packages
500 http://us.archive.ubuntu.com/ubuntu jammy/universe i386
Packages
** Affects: fdroidserver (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2140589
Title:
fdroidserver fails to serve APK's with API version > 26
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